C02F 1/5245
Using basic salts
Official title: {using basic salts, e.g. of aluminium and iron}
C02F1/5245 (Using basic salts) appears on 798 US grants and 1,019 published applications in this corpus.
Search patents in C02F- Granted patents
- 798
- Published applications
- 1,019
- Assignees
- 649
- Inventors
- 2,320
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 11 | 0 |
| 1998 | 18 | 0 |
| 1999 | 20 | 0 |
| 2000 | 8 | 0 |
| 2001 | 21 | 5 |
| 2002 | 20 | 23 |
| 2003 | 17 | 24 |
| 2004 | 14 | 23 |
| 2005 | 16 | 14 |
| 2006 | 10 | 21 |
| 2007 | 10 | 21 |
| 2008 | 16 | 21 |
| 2009 | 12 | 16 |
| 2010 | 14 | 19 |
| 2011 | 13 | 22 |
| 2012 | 7 | 19 |
| 2013 | 10 | 35 |
| 2014 | 14 | 70 |
| 2015 | 17 | 57 |
| 2016 | 26 | 54 |
| 2017 | 38 | 57 |
| 2018 | 37 | 42 |
| 2019 | 43 | 63 |
| 2020 | 45 | 58 |
| 2021 | 52 | 68 |
| 2022 | 46 | 63 |
| 2023 | 41 | 52 |
| 2024 | 44 | 57 |
| 2025 | 51 | 70 |
| 2026 | 24 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Efficient nitrogen and phosphorus removal process system for mariculture tail water treatment15 Sep 2026US 12,735,339 B2Tianjin Research Institute for Water Transport Engineering, M.O.T.
- Apparatus and method for treating waste water1 Sep 2026US 12,722,993 B2Samsung E&A Co., Ltd.
- Process for removing hardness and total organic carbon from drinking water25 Aug 2026US 12,715,796 B2Veolia Water Solutions & Technologies Support
- Anoxic bioreactor treatment followed by pH adjusted peroxide/iron treatment for enhanced, efficient selenium removal in wastewaters25 Aug 2026US 12,715,802 B2Evoqua Water Technologies LLC
- Method for process water treatment14 Jul 2026US 12,679,754 B2Metso Finland Oy
- Contaminant Precipitation Compositions and Methods of Use8 Oct 2026US 2026/0308025 A1Locus Solutions Ipco, LLC
- Method for Treating Phosphorus-Containing Wastewater Produced During Preparation of Sulfonamide Compound8 Oct 2026US 2026/0308035 A1Nanhai Beisha Pharmaceutical Co., Ltd.
- Impurity removal from brines pre/post direct lithium extraction10 Sep 2026US 2026/0265093 A1Schlumberger Technology Corporation
- System and method of supplements dosing to remove total nitrogen from sewage10 Sep 2026US 2026/0265106 A1
- Resourceful Treatment Method of BOE Waste Liquid3 Sep 2026US 2026/0257948 A1Dongjiang Environmental Company Limited
Most cited
By later US patents
- Method of treating fluoride-containing water61US 5,043,072 AKurita Water Industries Ltd. · 1991
- Water treatment techniques61US 8,071,055 B2Blue Water Technologies, Inc. · 2011
- Wastewater treatment system55US 6,893,567 B1North Carolina State University · 2005
- Process for the treatment of saline water52US 7,595,001 B2GEO-Processors USA, Inc. · 2009
- Method for removing toxic substances in water51US 6,093,328 A2000